Sunday, February 23, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1519

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1519



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions)provides an overview of each diagnostic category.



DTC Descriptors



DTC P0615



- Starter Relay Control Circuit



DTC P0616



- Starter Relay Control Circuit Low Voltage



DTC P0617



- Starter relay Control Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



When the ignition switch is placed in the START position, a discrete signal is supplied to the body control module (BCM) notifying it that the



ignition is in the START position. The BCM then sends a message to the engine control module (ECM) that crank has been requested. The ECM



then verifies that the clutch pedal is depressed or the transmission is in Park/Neutral. If it is, the ECM then supplies 12 V to the control circuit of the



starter relay. When this occurs, battery voltage is supplied through the switch of the starter relay to the starter solenoid.



Conditions for Running the DTC



* The ignition is in the START position.



* The system voltage is between 9.5-18 V.



Conditions for Setting the DTC



The ECM detects improper voltage on the control circuit of the starter relay.



Action Taken When the DTC Sets



DTC P0615, P0616, and P0617 are C type DTCs.



Conditions for Clearing the DTC



DTC P0615, P0616, and P0617 are C type DTCs.



Reference Information



Schematic Reference



Starting and Charging Schematics (See: Starting and Charging/Diagrams/Electrical Diagrams)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



Starting System Description and Operation (See: Starting and Charging/Starting System/Description and Operation)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit



Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code